TV bulb funnel construction

Details TV bulb funnel construction TV bulb funnel construction

1976-05-10

1977-06-21

Marcus, Stephen

Receptacles

Envelope for electric lamp or similar device

Tv tube

H01J 520, H01J 2900

Patent

active

040306275

ABSTRACT:
TV bulbs are composed of funnels and panels, and the present invention sets forth a novel construction of a funnel for a TV bulb which not only incorporates thinner walls than a conventional funnel, but which also utilizes less total glass when formed into a bulb than a conventional TV bulb, while retaining the required strength and sealing surface area necessary to form an evacuated TV tube when sealed to a viewing panel.

REFERENCES:
patent: 2236708 (1941-04-01), Grimditch
patent: 2697311 (1974-12-01), Polan
patent: 2837235 (1958-06-01), Vincent
patent: 2966997 (1961-01-01), Stutske
patent: 3071280 (1963-01-01), Mayhew et al.
patent: 3404302 (1968-10-01), Nicklas
patent: 3971490 (1976-07-01), Conger

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